Non-contact touch switch

ABSTRACT

A non-contact touch switch allows a control circuit to do an accurate change-over start to AC switch power supply by using a human body advanced medium induction manner and comprises an outer cover, correspondingly installed at an outlet of a switch power cord; a microcomputer control circuit, installed on an inner side of the outer cover; a medium transferring interface, installed on the outer cover and having an interconnection with the microcomputer control circuit; a start switch, one end thereof being connected with the microcomputer control circuit and another end thereof being disposed with a control contact connected with an AC switch power cord so as to control an electrification time of an electric facility connected therewith afterwards; and a power interceptor, connected between the microcomputer control circuit and the control contact of the start switch, capable of directly intercepting a power supply from a general public power through the switch power cord to act as a power supply of a normal operation of an internal circuit after being rectified and stabilized. whereby, a volume of a combined switch is allowed to reduce substantially, no additional attached battery is required and the control function can then be brought into full play, a normal work can be maintained once the public power is connected.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a non-contact touch switch, and moreparticularly to a non-contact switch using a human body advancedinduction to intercept electricity automatically and synchronically bymeans of a programming process and without an installment of a batteryso as to be able to reduce a volume substantially and allow a controlcircuit to start an AC switch power supply.

2. Description of Related Art

A simple touch induction controller is mainly used to replace a physicalmechanical switch in a capacitance type touch switch; because it is a“non-contact” controller and is not exposed outside like the physicalmechanical switch, abrasion will not be caused such that the reliabilitycan be elevated substantially, and because the inside thereof is notinstalled with any mechanical structure, the durability is good and thedesign degree of freedom is high. Besides, the electroplating isunnecessary because contacts are maintained in an insulation state andthe waterproof and dustproof abilities can be obtained easily. Hence,this technology can be adopted in more application domains because somany merits are gathered in it.

However, the sensitivity of such kind of non-contact touch switch isvery easy to be influenced by a human body medium and surroundingelectric fields; it is hitherto only applied on a low voltage DCcontrol. But, a touch switch used for a high voltage AC control hasalready appeared in the current market accompanying the progress oftechnology, for example, a customized and marketing product currentlyavailable in the network produced by Tranzzend International Co., Ltd.

However, the product mentioned above still has a very big problem inapplication, in fact, a micro-active non-contact switch is still adoptedto obtain an inner part of a structure and a battery must beadditionally installed on a bottom of a combined product so as toacquire a stable power supply to enable an internal control circuit tomaintain a normal work such that not only it causes a volume of theswitch to be increased relatively but also the battery must be detacheddown and replaced with a new one every other period of time, otherwisethe circuit will be out of order to cause inconvenience on use, and thisis its biggest deficit.

In addition, no matter what the power is mechanical or electronic, anoutlook modeling of the product is fixed and unable to be changedarbitrarily while leaving the factory such that styles of the productsare few, and the outlooks thereof are inflexible and lack of variation,unable to match various different decorations while being assembled, andcannot be further varied according to an individual requirement at alater date as well as does not allow a self-style to be expressed.

SUMMARY OF THE INVENTION

The main object of the present invention is to provide a non-contactswitch using a human body advanced induction to intercept electricityautomatically and synchronically by means of a programming process andwithout an installment of a battery so as to be able to reduce a volumesubstantially and allow a control circuit to start an AC switch powersupply.

For attaining to the object mentioned above, the present inventiondiscloses a non-contact touch switch, allowing a control circuit to doan accurate change-over start to AC switch power supply by using a humanbody advanced medium induction manner, comprising:

an outer cover, correspondingly installed at an outlet of a switch powercord;a microcomputer control circuit, installed on an inner side of the outercover;a medium transferring interface, installed on the outer cover and havingan interconnection with the microcomputer control circuit;a start switch, one end thereof being connected with the microcomputercontrol circuit and another end thereof being disposed with a controlcontact connected with an AC switch power cord so as to control anelectrification time of an electric facility connected therewithafterwards; anda power interceptor, connected to a place between the microcomputercontrol circuit and the control contact of the start switch, capable ofdirectly intercepting power supply from a general public power throughthe switch power cord to act as a power supply of a normal operation ofan internal circuit after being rectified and stabilized; whereby, avolume of a combined switch is allowed to reduce substantially, noadditional attached battery is required and the control function canthen be brought into full play, a normal work can be maintained once thepublic power is connected, and the trouble of detaching and replacing abattery frequently can be avoided to allow the use of a switch to bemore convenient.

Another object of the present invention is to provide a human-basedswitch capable of replacing an outlook pattern mobily so as to beconvenient for a user to change the outlook of a switch to manifest aself-style by himself and enable the switch to match various differentindoor decorations.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention can be more fully understood by reference to thefollowing description and accompanying drawings, in which:

FIG. 1 is a schematic view, showing a non-contact touch switch of thepresent invention while being put into practice;

FIG. 2 is a block diagram, showing a circuit of a non-contact touchswitch of the present invention;

FIG. 3 is a circuit diagram, showing a power interceptor of a firstpreferred embodiment according to the present invention;

FIG. 4 is a circuit diagram, showing a power interceptor of a secondpreferred embodiment according to the present invention;

FIG. 5 is a graph, showing a voltage level interception of the secondembodiment according to the present invention;

FIG. 6 is a circuit diagram, showing a power interceptor of a thirdpreferred embodiment according to the present invention;

FIG. 7 is a graph, showing a voltage level interception of the thirdembodiment according to the present invention;

FIG. 8 is an exploded view, showing a muzzle type picture placing areaof the present invention;

FIG. 9 is an exploded view, showing an indented picture placing area ofthe present invention; and

FIG. 10 is an exploded view, showing a laminated picture of the presentinvention while being adhered onto a picture placing area.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIGS. 1 to 10. a non-contact touch switch according tothe present invention allows a control circuit to do an accuratechange-over start to AC switch power supply by using a human bodyadvanced medium induction manner, comprising:

an outer cover 1, correspondingly installed at an outlet of a switchpower cord;a microcomputer control circuit 2, installed on an inner side of theouter cover 1;a medium transferring interface 3, installed on the outer cover 1 andhaving an interconnection with the microcomputer control circuit;a start switch 4, one end thereof being connected with the microcomputercontrol circuit 2 and another end thereof being disposed with a controlcontact 41 connected with an AC switch power cord so as to control anelectrification time of an electric facility such as an indoor, outdooror other powered device connected therewith afterwards; anda power interceptor 5, connected between the microcomputer controlcircuit 2 and the control contact 41 of the start switch 4, capable ofdirectly intercepting power supply from a general public power throughthe switch power cord to act as a power supply of a normal operation ofan internal circuit after being rectified and stabilized.

Whereby, a volume of a combined switch is allowed to reducesubstantially, no additional attached battery is required and thecontrol function can then be brought into full play, a normal work canbe maintained once the public power is connected, and the trouble ofdetaching and replacing a battery frequently can be avoided to allow theuse of a switch to be more convenient.

A medium constant in the induction area can then be changed to switch onthe switch when a finger touch an induction area lightly because thepresent invention adopts a human body organism medium induction mannerto start the power switch and takes the human body as a medium; acombined volume of the switch is small and the action thereof isaccurate and reliable, an internal circuit thereof is compact and canintercept AC power supply automatically, no battery and without anymechanical contact is attached and disposed. Furthermore, a zero phasedetonation start manner can be adopted to prevent spark from beinggenerated and provided with the flame-proof and electric-shock-prooffunctions. The switch of the present invention not only is suitable forthe switch hiding and the decoration matching of a general home or highclass residence, but also may be installed in a public place, a highsalinity seashore area or a higher corrosiveness sulfide place so as toreduce the maintenance expands afterwards. Besides, the switch of thepresent invention may also be installed in a highly infectiveenvironment such as hospital or quarantine station so as to avoidinfection to persons, or installed in a highly dangerous area such asfuel storage depot, oil tank, oil refinery to strengthen the flame-proofeffect to elevate the public safety.

In addition, for further strengthening the safety protection measures ofthe circuit, an overload detection unit 24 may further be installed inthe microcomputer control circuit 2 to enable the power interceptor 5and the microcomputer control circuit 2 to have a synchronic function.When the control contact 41 of the start switch 4 is connected with apower supply, the overload detection unit 24 can then process an instantdetection to detect whether there is an overload effect at the sametime. If a preset standard load value is exceeded, the microcomputercontrol circuit 2 will then process a start switch 4 terminatingprocedure; the procedure is not stopped until the overload situation iseliminated. Hence, the use safety of the circuit can be assured to avoidinducing a fire accident probably caused from a long term overload toendanger the public safety like a general marketing conventional switchdoes.

When the switch of the present invention put into practice, please referto FIGS. 1 and 2, the medium transferring interface 3 may be constitutedby a non-conductive substrate 31 and an erosive circuit board 32disposed below it; a detailed structure of the microcomputer controlcircuit 2 comprises a measuring linear circuit 21, non-linearcompensation circuit 22, phase comparison logic gate 23 and MCUmicrocontroller unit 25; a front end of the measuring linear circuit 21is connected with the medium transferring interface 3, and a rear endthereof is respectively connected with the not-linear compensationcircuit 22 and the phase comparison logic gate 23; one end of the MCUmicrocontroller unit 25 is connected with the not-linear compensationcircuit 22, and another end thereof is connected with the aforementionedstart switch 4; the start of the start switch 4 is a zero phasedetonation start; the synchronic power interceptor 5 is disposed on theMCU microcontroller unit 25 and the control contact 41 of the startswitch 4.

In addition, a buzzer 6 may further be disposed on the microcomputercontrol circuit 2 to allow the switch to generate a mechanical switchswitching sound to enable a user to feel more realistic while operatingthe switch.

Please refer to FIGS. 2 to 7. There are many forms for an interceptoraccording to the present invention; one of them is a structure shown inFIG. 3 in which a current amplifying transformer 511 is installed inseries on input end contacts A and B of the control contact 41 of thestart switch 4, a secondary pole thereof is connected to a bridgerectifier 512 and a diode voltage regulator 513 formed into a powersupply circuit with pins of the MCU microcontroller unit 25.

Please refer to FIGS. 4 and 5. FIGS. 4 and 5 show another design ofinterceptor 5 mainly comprising a plurality of diodes 521 disposed inseries on the input end contacts A and B of the control contact 41 ofthe start switch 4, an backward diode 522 disposed in parallel on twoterminals thereof, a voltage dividing diode 523 for connecting with avoltage stabilizing IC 525 disposed on a middle contact. Two sides ofthe voltage stabilizing IC 525 are respectively connected in series witha capacitor 524 formed into a power supply circuit 520 with the pins ofthe MCU microcontroller unit 25 such that voltages such as hatchedportions in FIG. 5 can then be intercepted automatically from the publicpower AC110V.

Please refer to FIGS. 6 and 7. The aforementioned interceptor 5 may alsofurther be disposed with a field effect transistor 55 to constitute anintegrated circuit (IC) to allow a source and a drain of the fieldeffect transistor 55 to be respectively coupled to two terminals of theaforementioned plurality of serial diodes 521, a gate thereof isconnected to another pin of the MCU microcontroller unit 25 such thatthe entire circuit can be allowed to have the energy saving effect, theintercepted voltages are hatched portions shown in FIG. 7, the operationtends to become more perfect and saves one-third of the electricityconsumed in the proceeding embodiment and can reduce the powerconsumption and the heat.

Please refer to FIGS. 8 to 10. A picture placing area 15 may be disposedin front of the medium transferring interface 2 to allow a picture to beplaced therein to enable a user to change the outlook of the switchhimself to manifest the self style and match it with various differentindoor decorations.

While being put into practice, the picture placing area 15 may beconstructed by adopting the follow various structures, for example, thepicture placing area 15 is built as a transparent cover body with asingle-sided opening shown in FIG. 8 to enable a user to place a picture10 chosen by himself therein depending on his favorite, or the pictureplacing area 15 is disposed in an indented stepwise transparent window19 in the center of the front cover 1 as FIG. 9 shows, and a detachabletransparent sheet 17 is installed additionally in front of the pictureplacing area 15, and similarly, it may also be used for clipping aself-chosen picture 10.

Even more, basically, the transparent sheet is unnecessary, a surface ofa modeling picture 10 is directly disposed with a laminate layer 11, anda rear side thereof is then spread with a glue and then adhered onto thesurface of the medium transferring interface 2 as FIG. 10 shows; it canalso achieve the object of a mobile replacement of the picture 10.

As mentioned above, the present invention has the following merits:

-   1. a touch switch is inducted by a human body advanced medium and    processed by a program, a start work can be controlled accurately.-   2. a hermetically sealed touch manner may be adopted for a switch    panel, the flame-proof function is provided.-   3. a synchronic overload detection is disposed in a switch, it is    safer on use.-   4. a combined switch may intercept a public power directly, a    battery is unnecessary to be attached such that a volume thereof can    be reduced and the trouble of frequent replacement of the battery    can be avoided.-   5. the switch is provided with a sound simulating the push-down of a    mechanical switch, the compatibility of the replacement with a    current product is good.-   6. a picture modeling outside the combined switch can be replaced    depending on a self favorite so as to manifest the self style and    used by collocating various different indoor decorations.

Additional advantages and modifications will readily occur to thoseskilled in the art. Therefore, the invention in its broader aspects isnot limited to the specific details and representative embodiments shownand described herein. Accordingly, various modifications may be madewithout departing from the spirit or scope of the general inventiveconcept as defined by the appended claims and their equivalents.

1. A non-contact touch switch, utilizing a human body advanced mediuminduction manner to enable a control circuit to do an accurate switchingstart to an AC switch power source, comprising: an outer cover, disposedcorrespondingly at an outlet of a switch power cord; a microcomputercontrol circuit, disposed inside said outer cover; a medium transferringinterface, disposed on said outer cover and connected internally to saidmicrocomputer control circuit; a start switch, one end thereof beingconnected with said microcomputer control circuit, and another endthereof being disposed with a control contact connected to said ACswitch power cord so as to control an electrifying time of a connectedelectric facility afterwards; and a power interceptor, connected to aplace between said microcomputer control circuit and said controlcontact of said start switch, intercepting a power supply directly froma general public power through said AC switch power cord to use as apower supply for a normal operation of an internal circuit after beingrectified and stabilized; whereby, a combined switch is allowed to befree from an additional attachment of a battery, a normal work can bemaintained once said public power is connected.
 2. The non-contact touchswitch according to claim 1, wherein a buzzer generating a soundsimulating a sound generated from pressing a mechanical switch isinstalled on said microcomputer control circuit.
 3. The non-contacttouch switch according to claim 1, wherein said microcomputer controlcircuit is disposed with a overload detection unit.
 4. The non-contacttouch switch according to claim 1, wherein said medium transferringinterface is constituted by a non-conductive substrate and an erosivecircuit board disposed on a bottom thereof, said microcomputer controlcircuit comprises a measuring linear circuit, non-linear compensationcircuit, phase comparison logic gate and MCU microcontroller unit; afront end of said measuring linear circuit is connected with said mediumtransferring interface, a rear end thereof is respectively connectedwith said non-linear compensation circuit and said phase comparisonlogic gate; one end of said MCU microcontroller unit is connected withsaid non-linear compensation circuit, and another end thereof isconnected with said start switch; said start switch is zero phasedetonation starting; said power interceptor is installed between pins ofsaid MCU microcontroller unit and said control contact of said startswitch.
 5. The non-contact touch switch according to claim 4, whereinsaid power interceptor comprises a current amplifying transformerdisposed in series on an input end of said control contact of said startswitch, a bridge rectifier and a stabilizing diode connected to asecondary terminal to form a power supply circuit with said pins of saidMCU microcontroller unit.
 6. The non-contact touch switch according toclaim 4, wherein said power interceptor comprises a plurality of diodesdisposed in series on an input end of said control contact of said startswitch, a backward diode is disposed in series on two terminals thereof,a voltage-dividing diode disposed on a middle contact thereof forconnecting with a voltage stabilizing IC and a capacitor respectivelydisposed in series on two sides of said voltage stabilizing IC to form apower supply circuit with said pins of said MCU microcontroller unit. 7.The non-contact touch switch according to claim 6, wherein said powerinterceptor is further disposed with a field effect transistor toconstitute an integrated circuit, a source and a drain of said fieldeffect transistor are respectively coupled to two terminals of saidplurality of series diodes, a gate thereof is connected to another pinof said MCU microcontroller unit.
 8. The non-contact touch switchaccording to claim 1, wherein a transparent picture placing area usedfor allowing a picture to be placed therein is disposed in front of saidmedium transferring interface.
 9. The non-contact touch switch accordingto claim 8, wherein said picture placing area is disposed in an indentedstepwise transparent window on a middle part of said front cover, and amovable detachable transparent sheet is additionally disposed in frontof said picture placing area.
 10. The non-contact touch switch accordingto claim 8, wherein a surface of said picture had a laminate layer, arear side thereof is spread with a glue and then adhered directly onto asurface of said medium transferring interface.
 11. The non-contact touchswitch according to claim 8, wherein said picture placing area isconstitute by a transparent cover with an opening at one side thereof.